Home / 86,926.08-130,389.12-67,218.78

Finding the Fourth Proportional to 86,926.08, 130,389.12 and 67,218.78

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Solution

The fourth proportional to 86,926.08, 130,389.12 and 67,218.78 is: 100,828.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,926.08 : 130,389.12 = 67,218.78 : x
  2. Step 2: Convert to fraction form
    86,926.08/130,389.12 = 67,218.78/x
  3. Step 3: Cross multiply
    86,926.08x = 130,389.12 × 67,218.78
  4. Step 4: Simplify right side
    86,926.08x = 8,764,596,583.63
  5. Step 5: Solve for x
    x = 8,764,596,583.63/86,926.08
  6. Step 6: Final answer
    x = 100,828.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.